how much money a couple should have to carry.

It is not exactly the peak season in Goa right now, so everything from food to accommodation would be very reasonably priced. You can also expect some amazing Goa packages on offer which will fit in your pocket and do the needful wonderfully. The budget of the entire trip would also depend upon how many days you would be staying for and the hotel category.
Check out few budget hotels in Goa to plan your trip better.

There are numerous things to see and experience in Goa, provided you have the right information. With a host of exciting things to do in Goa, travelers can thoroughly enjoy the experience of exploring this destination. If you are travelling for the first time, the Goa travel guide may help resolve most of your queries about Goa. In fact, it is like a veritable information packed handbook on Goa tourism. All you need is a list of options on topics such as where to stay, what to eat, weather in Goa and places to visit in Goa and you can be guaranteed an awesome trip to Goa.